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Question About Craftsman Garage Door Opener 139.53978SRT
need a manual for craftsman 1/2 hp garage door par...

need a manual for craftsman 1/2 hp garage door part # 41A5021-3H-315...Track bolt became unscrewed and the chain disengaged from the track..caused the garage door to slam shut

Asked by Brendan on 05/04/2014 1  Answer

ManualsOnline posted an answer 10 years, 8 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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